1976] 
Henry — Larval Owlflies 
11 
with very large, crescent-shaped, distally tapered prelabial lobes 
(Prlb) arising quite close to one another from sides of “neck” of 
postlabium. Terminal palpimere of labial palpus (Pip) nearly as 
long as first and second combined. 
Body: elliptical in outline and not prominently flattened when 
mature. Prothoracic notum small, sclerotized, convex, roughly 
elliptical to triangular in outline and nearly twice as broad as long, 
bearing no scoli or tubercles. Remainder of body lightly sclerotized 
except for a pair of oval plates situated laterally in tergum of the 
mesothorax and a second smaller pair similarly located in meta- 
thorax. Lateral margins of each thoracic and abdominal segment 
(except terminal segments 9 and 10 of abdomen) prolonged into 
a pair of unflattened, finger-like setigerous scoli, ten pairs in all. 
Each mesothoracic scolus (ScMs) fully as long as head capsule, 
inclined forward basally and reflexed backward at its mid-point. 
Metathoracic scoli (ScMt) two-thirds as long as mesothoracic ones, 
less sharply reflexed; remaining 8 pairs of abdominal scoli straight, 
shorter than thoracic ones, and becoming gradually smaller toward 
rear. Minute pair of vestigial scoli (Scvg) present behind and slightly 
ventral to primary pair on both meso- and metathorax. Meso- 
thoracic spiracles (SpMs) very large, borne dorso-laterally on cone- 
shaped sclerotized tubercles behind prothorax; all other spiracles 
smaller, ventro-laterally located, one pair for each of the first eight 
abdominal segments. 
Chaetotaxy: Dense, double fringe of very long serrate setae pres- 
ent on lateral margins of head capsule and peripherally on all scoli. 
Single primary row of shorter, distally flared, serrate dolichasters 
(as in figure 8-a) closely set along entire anterior labral margin. 
Each ocular tubercle with still shorter, tightly packed dolichasterine 
setae over most of its distal surface, with two very large subequal 
setae projecting backward from the posterior outer margin. An- 
tennal tubercle bearing a group of three (very rarely, four) slender, 
smooth setae with apical stellate enlargements (SSt and figure 8-d) 
Figure 3. [opposite page] Ululodes mexicana, details of head capsule of mature 
third instar. A = anterior dorsal aspect, B = anterior ventral aspect. AT = antennal 
tubercle, Cd = maxillary cardo, ER = epistomal ridge, excv = lateral excavation, 
Gu = gular area, Gul = gular line, LmM = labral margin, MdCV = ventral mandibular 
condyle, OT = ocular tubercle, Plb = postlabium, Prlb = prelabial lobe, Pip = labial 
palp, SgR = subgenal ridge, SSt = stellate-tipped seta, St - maxillary stipes, TAP = 
anterior tentorial pit, TPP = posterior tentorial pit. 
